Experimental and simulation studies of gas sorption processes in polycarbonate films |
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Authors: | M Mar López-González |
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Affiliation: | a Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain b Departamento de Química Física, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain |
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Abstract: | This work reports the experimental isotherms describing the concentration of oxygen and nitrogen in poly(bisphenol A carbonate-co-4,4′-(3,3,5-trimethylcyclohexylidene) diphenol carbonate) vs pressure, at 30 °C. The solubility coefficients are interpreted in terms of the Flory-Huggins theory, obtaining reasonable values for the enthalpic polymer-gas parameter. A new method is outlined to simulate the probabilities of inserting/removing a gas molecule in a host matrix already containing n molecules of gas. The simulated isotherms representing the pressure dependence of the concentration exhibit the same pattern as those experimentally obtained. |
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Keywords: | Experimental isotherms Flory-Huggins theory Polycarbonate |
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